Dismantling Of Tray; Assembling Of Tray; Abbreviations - Philips CDR796 Service Manual

Service hints

Dismantling of Tray

1. Open the tray and release 2 catches as
shown in fig. 2
2. Pull tray out.

Assembling of Tray

1. Check if slider is on the right side see
picture below.
2. If necessary - move slider to the right end
position first.
3. Insert the Tray.
8-2
fig.2

Abbreviations

Laser Power Control & HF Amplifier (ADALAS) TZA1024/TZA1025
Pin Name Direction
1 LD HF-preamp CD-drive
2 VCCL +5V
3 CFIL HF-preamp
4 MON CD-drive HF-preamp
5 DIN CD-drive HF-preamp
6 GND GND
7 PWRON CD10 HF-preamp
8 CMFB VrefCD10 (+3,3V / 2)
9 RFFB HF-preamp
10 RFEQO HF-preamp
11 CDRW CD10 HF-preamp
12 EQSEL CD10 HF-preamp
13 VCC2 +3,3V
14 RGADJ GND
SIGNAL PROCESSOR (CD10) SAA7325
Pin Name Direction
1 HFREF CD10
2 HFIN CD10
3 ISLICE CD10
4 VSSA1 GND
5 VDDA1 +3,3V
6 IREF CD10
7 VRIN CD10
8 D1 CD-drive CD10
9 D2 CD-drive CD10
10 D3 CD-drive CD10
11 D4 CD-drive CD10
12 R1 CD-drive CD10
13 R2 CD-drive CD10
14 VSSA2 GND
15 CROUT CD10 X-TAL
16 CRIN X-TAL CD10
17 VDDA2 +3,3V
18 LN CD10
19 LP CD10
20 VNEG GND
21 VPOS +3,3V
22 RN CD10
23 RP CD10
24 SELPLL CD10
25 TEST1 GND
26 CL16 CD10 NPC
27 DATA CD10 NPC
28 WCLK CD10 NPC
29 SCLK CD10 NPC
30 EF CD10 NPC
31 TEST2 GND
32 KILL CD10 Mute control
33 VSSD1 GND
34 V2/V3 CD10 NPC
35 WCLI NPC CD10
36 SDI NPC CD10
37 SCLI NPC CD10
38 RESETn µP CD10
39 SDA µP CD10
40 SCL µP CD10
41 RAB µP CD10
42 SILD µP CD10
43 STATUS CD10
44 TEST3 GND
45 RCK CD10
46 SUB CD10
47 SFSY CD10 µP
48 SBSY CD10 NPC
49 CL11/4 CD10
50 VSSD2 GND
51 DOBM CD10
52 VDDD1P +3,3V
53 CFLG CD10
54 RA CD10 servo driver
55 FO CD10 servo driver
56 SL CD10 servo driver
57 VDDD2C +3,3V
58 VSSD3 GND
59 MOTO1 CD10 servo driver
60 MOTO2 CD10
61 V4 CD10 HF-preamp
62 V5 CD10 HF-preamp
63 V1 innerswitch CD10
64 LDON CD10 HF-preamp
8-2
Description
current output to laser diode
laser supply voltage
external filter capacitor
laser monitor diode input
central diode input
ground
power-on select input
common mode feedback voltage input
external RF feedback resistor
RF amplifier output
gain select input for CDDA/CDRW
equalizer/speed select input
supply voltage
external laser supply gain adjust resistor
Description
comparator common mode input
comparator signal input
current feedback from data slicer
analog ground 1
analog supply voltage 1
reference current output pin
reference voltage for servo ADC's
unipolar current input (central diode signal input)
unipolar current input (central diode signal input)
unipolar current input (central diode signal input)
unipolar current input (central diode signal input)
unipolar current input (satellite diode signal input)
unipolar current input (satellite diode signal input)
analog ground 2
crystal/resonator output
crystal/resonator input
analog supply voltage 2
DAC left channel differential output - negative
DAC left channel differential output - positive
DAC negative reference input
DAC positive reference input
DAC right channel differential output - negative
DAC right channel differential output - positive
selects whether internal clock multiplier PLL is used
test control input 1; this pin should be tied low
16.9344 MHz system clock output
serial data output (3-state)
word clock output (3-state)
serial bit clock output (3-state)
C2 error flag output (3-state)
test control input 2; this pin should be tied low
kill output (programmable; open-drain)
digital ground 2
versatile I/O: input versatile pin 2 or output versatile pin 3 (open-drain)
word clock input (for data loopback to DAC)
serial data input (for data loopback to DAC)
serial bit clock input (for data loopback to DAC)
power-on reset input (active low)
microcontroller interface data I/O line (open-drain output)
microcontroller interface clock line input
microcontroller interface R/W and load control line input (4-wire bus mode)
microcontroller interface R/W and load control line input (4-wire bus mode)
servo interrupt request line/decoder status register output (open-drain)
test control input 3; this pin should be tied low
subcode clock input
P-to-W subcode bits output (3-state)
subcode frame sync output (3-state)
subcode block sync output (3-state)
11.2896 MHz or 4.2336 MHz (for microcontroller) clock output
digital ground 3
bi-phase mark output (externally buffered; 3-state)
digital supply voltage 2 for periphery
correction flag output (open-drain)
radial actuator output
focus actuator output
slide control output
digital supply voltage 3 for core
digital ground 4
motor output 1; versatile (3-state)
motor output 2; versatile (3-state)
versatile output pin 4
versatile output pin 5
versatile input pin 1
laser drive on output (open-drain)